In sentencing Victorino Chua, Mr Justice Openshaw QC described how Grant Misell was left with brain damage after the nurse poisoned him directly.
The court was told Chua flushed his drip with saline contaminated with insulin himself.
He suffered a terrifying hypoglycaemic attack which caused a severe brain injury.
Chua has watched as he was in agony, moaning in pain but did not help him.
In Grant Misell's victim impact statement, he described how his life had been destroyed. He had been an accountant, negotiating multimillion pound deals and now says he can no longer hold down a job stacking shelves.
Victorino Chua's full statement from his prison cell
Police believe "psychopath" used forged qualifications to register as nurse
ITV News has uncovered doubts over how qualified Victorino Chua was before he came to the UK and poisoned patients.